Fundamentals in the Development of High Performance Inkjet Receptive Coatings, 2008 Advanced Coating Fundamentals Symposium

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We openly present some insights into quality inkjet media development. Vital understandings of capillary penetration and latex coalescence and the CPVC concept are thoroughly discussed from surface chemistry and coating technology perspectives, aimed at efficient but inexpensive coating system design. CPVC defines coating porosity and integrity leading to the porous or the swelling type formulation. Physical criteria to leverage and balance in inkjet receptive coatings turn out to be pore size, porosity, and wetting. In aqueous coatings, the particle size of polymer particles relevant properly to that of pigment particulates and the Tg of the polymer can be employed to maximize ink adsorption. Adequate cationicity as conferred by coating components greatly enhances print optical density and bleed properties. Process-wise, appropriate compatibility, viscosity and solids, adhesion to substrates, defoaming are all supportive of viable coatings. By largely complying with the constructive ideas, we developed coated products showing competitive photo performance.